UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549

FORM 8-K
CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(D) OF
THE SECURITIES EXCHANGE ACT OF 1934

Date of Report (Date of earliest event reported): November 4, 2025

NB BANCORP, INC.

(Exact Name of Registrant as Specified in Charter)


Maryland	001-41899	93-2560883
(State or Other Jurisdiction)	(Commission File No.)	(I.R.S. Employer
of Incorporation)		Identification No.)


	1063 Great Plain Avenue, Needham, Massachusetts	02492
	(Address of Principal Executive Offices)	(Zip Code)

Registrant’s telephone number, including area code: (781) 444-2100

Not Applicable
(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

☐	Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐	Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐	Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐	Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:


Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common Stock, Par Value $0.01 Per Share	NBBK	The Nasdaq Stock Market, LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☒

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 8.01

OTHER EVENTS

On November 4, 2025, NB Bancorp, Inc. (the “Company”), the parent company of Needham Bank, made available a slide presentation at an in-person investors bank meeting. The presentation materials include information regarding the Company’s operations and financial performance. The slide presentation is included in this Current Report on Form 8-K as Exhibit 99.1 and is incorporated herein by reference.

Item 9.01

Financial Statements and Exhibits.

(d)

Exhibits


Exhibit No.		Description
99.1		Presentation Materials of NB Bancorp, Inc. dated November 4, 2025
104		Cover Page Interactive Data File (Embedded within Inline XBRL document)

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, hereunto duly authorized.


		NB BANCORP, INC.

DATE: November 4, 2025	By:	/s/Jean-Pierre Lapointe
		Executive Vice President and Chief Financial Officer

NB Bancorp, Inc. 8-K